Actress, Jennifer Love Hewitt is all smiles with 4 carat each round Ziamond Cubic Zirconia Stud Earrings in 14k white gold! See here for the entire Ziamond Cubic Zirconia Stud Earring Collection. Ziamond's high quality cubic zirconia cz Stud Earring Collection features the finest quality cubic zirconia available and is a must have in every woman's jewelry collection.